Deck 23: XML

Question 1

The ____ standard defines interfaces and methods to analyze and modify the tree structure that represents an XML document.

A) JAXP
B) SAX
C) DOM
D) API

Answer 1

C

Question 2

Which of the following statements is correct?

A) XML is an extensible syntax that can be used to specify many different kinds of data.
B) XML has one specific purpose: to describe web documents.
C) XML tells you how to display data.
D) You can always replace XML elements with attributes.

Answer 2

A

Question 3

One of the advantages of XML is that _________.

A) it is resilient to change.
B) it is difficult to understand.
C) its values don't have to be enclosed in quotes.
D) array positions start with 1.

Answer 3

A

Question 4

An XPath describes a node or_______, using a syntax that is similar to directory paths.

A) folder
B) set of nodes
C) parser
D) model

Question 5

To get a DocumentBuilder object, first call the static ____ method of the DocumentBuilderFactory class.

A) newInstance
B) document
C) connection
D) newDocument

Question 6

Which of the following statements is correct?

A) XML-formatted data files are resilient to change.
B) In XML, start-tags need not have matching end-tags.
C) XML describes how to display data.
D) HTML is a special case of XML.

Question 7

A ________ parser reports the building blocks of an XML document.

A) tree-based
B) XPath
C) streaming
D) DOM

Question 8

To generate an object of a class that implements the Document interface, you need a __________.

A) DocumentGenerator
B) DocumentBuilder
C) DocumentValidator
D) ObjectBuilder

Question 9

Which of the following statements is correct?

A) Elements describe how to interpret attributes.
B) In XML, attribute values must be enclosed in quotes.
C) Mixed content allows you to have control over the order in which elements appear.
D) You should always use mixed content for elements that describe data sets.

Question 10

Which of the following attribute types describes any sequence of character in a DTD?

A) #REQUIRED
B) #IMPLIED
C) CDATA
D) ATTLIST

Question 11

Which of the following statements is correct?

A) In XML, every start-tag must have a matching end-tag.
B) XML files are readable by computer programs but not by humans.
C) Attribute values need not be enclosed in quotes.
D) An element cannot contain mixed content.

Question 12

Write an XML fragment with a course element and two child elements, courseID and credits. The course ID is CS605 and it has 3 credit hours.

A)
CS605
3

B)
CS605
3


C)
CS605
3

D)
CS605


3

Question 13

A __________ parser builds a document tree.

A) streaming
B) DOM
C) DTD
D) Document Model Object

Question 14

____________ is an extensible syntax that can be used to specify many different kinds of data.

A) DOM
B) ELEMENT
C) XHTML
D) XML

Question 15

To read and analyze the contents of an XML document, you need an XML ____________.

A) parser
B) document analyzer
C) path
D) tokenizer

Question 16

A ___________ is a program that reads a document, checks whether it is syntactically correct, and takes some action as it processes the document.

A) browser
B) compiler
C) document builder
D) parser

Question 17

The XML standard recommends that every XML document start with ____.

A)
B)
C)
D)

Question 18

In XML, an attribute has a name and a(n) ____________________.

A) variable
B) element
C) value
D) object

Question 19

Which of the following XML fragments contains an error?

A) half dollar
B)
C)
D) quarter

Question 20

Which of the following statements is correct?

A) Elements cannot have attributes.
B) An XML document starts out with an HTML declaration and contains elements and text.
C) An element must contain text or elements, not both.
D) An attribute is appropriate only if it tells something about the data but is not part of the data itself.

Question 21

Given the following code, what will the XPath count(/items/*) generate?



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A) 1
B) 2
C) 3
D) 4

Question 22

Given the following code, what will the XPath name(/items/item[2]/*[2]) generate?



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A) price
B) product
C) description
D) quantity

Question 23

Given the following code, what will the XPath /items/item[0]/quantity select?



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A) 19.95
B) 4
C) 8
D) The element does not exist.

Question 24

Which of the following represents the declaration of a DTD contained within the XML document?

A)
B)
C)
D)

Question 25

Which parser gives you an overview of the complete document so you can analyze it?

A) grammar parser
B) tree-based parser
C) block parser
D) streaming parser

Question 26

In XML, a DTD is introduced with the ___________ declaration.

A) FIXED
B) REQUIRED
C) IMPLIED
D) DOCTYPE

Question 27

When converting an XML document to Java classes, how should you think about XML elements?

A) Elements are equivalent to classes.
B) Elements are like instance variables.
C) Elements are similar to superclasses.
D) Elements can be instance variables, classes, or methods.

Question 28

Given the following code, what will the XPath /items/item[2]/product/price generate?



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A) 29.95
B) 19.95
C) 2
D) 4

Question 29

A _____________ reads and reports on each element of an XML document as it reads it.

A) DOM parser
B) tree-based parser
C) block parser
D) streaming parser

Question 30

Assuming that path is properly instantiated object of type XPath and doc is the document below, what is the value of result in the statement
String result = path.evaluate("count(/items/*", doc);



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A) 1
B) 2
C) 3
D) 4

Question 31

How can a DTD specify that a course child element in a semester element is optional?

A)
B)
C)
D)

Question 32

When referencing an external DTD (one not on the current file system), you must supply a(n) ____ for locating the DTD.

A) URL
B) domain name
C) IP address
D) element

Question 33

What does DOM stand for?

A) Data Object Model
B) Data Oriented Model
C) Document Object Model
D) Definition Object Model

Question 34

A ____________ is a sequence of rules that describes the valid attributes for each element and the valid child elements for each element type.

A) DOM
B) Protocol
C) DTD
D) Data Definition Type

Question 35

In XML, ___________ refers to any sequence of character data and elements.

A) ASCII characters
B) EBCIDC
C) mixed elements
D) mixed content

Question 36

Given the following code, what will the XPath count(/items/item) generate?



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A) 1
B) 2
C) 3
D) 4

Question 37

To make the parser ignore white space between elements, you should call the __________ method of the DocumentBuilderFactory class.

A) setIgnoringElementContentWhitespace
B) setElementContentWhitespace
C) setIgnoringContentWhitespace
D) setIgnoringElementContent

Question 38

Where is the newDocumentBuilder method?

A) In the DocumentBuilder class.
B) In the DocumentFactoryBuilder class.
C) In the DocumentFactory class.
D) In the DocumentBuilderFactory class.

Question 39

The inclusion of a DTD in an XML document allows you tell the parser to validate the document. The ___________ method of the DocumentBuilderFactory class allows you to turn on validation.

A) setValidator
B) setValidating
C) documentBuilder
D) setFactory

Question 40

Given the following code, what will the XPath /items/item[2]/quantity select?



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A) 19.95
B) 4
C) 8
D) The element does not exist.

Question 41

An EMPTY element is:

A) an element that may have zero or more children.
B) an element that has no value.
C) an element whose value is the null string.
D) an element that may not have any children.

Question 42

In an attribute definition in a DTD, a #REQUIRED declaration means ____________.

A) the attribute is valid.
B) the attribute is required.
C) the attribute is optional.
D) the attribute is implied.

Question 43

To insert text, you need the _________methods.

A) insertElement and setElement
B) createNode and insertChild
C) createTextNode and appendChild
D) insertTextNode and insertChild

Question 44

You set element attributes with the _________method.

A) setElementAttributes
B) setElement
C) setAttributes
D) setAttribute

Question 45

Given the following DTD expression, which section element is valid?

A)

Question 46

An element that is declared as _______ in a DTD may not have any children.

A) PCDATA
B) ELEMENT
C) NULL
D) EMPTY

Question 47

What method do you use to insert a node into an XML document?

A) insertNode method.
B) createNode method.
C) createElement method.
D) insertElement method.

Question 48

When referencing an external DTD (one not on the current file system), you must ____________.

A) supply a DOCTYPE.
B) supply a URL.
C) supply both DOCTYPE and URL.
D) use the SYSTEM reserved word.

Question 49

The XML encoding for the ">" character is:

A) &gr;
B) &greaterThan;
C) >
D) <

Question 50

What kind of object do you need to read an XML document?

A) DocumentBuilder
B) newBuilder
C) newInstance
D) newDocumentBuilder

Question 51

Mixed content is ____________.

A) any sequence of numeric data and character data.
B) any sequence of character data followed by character data.
C) any sequence of character data and specified elements.
D) any sequence of numeric data and specified elements.

Question 52

In an attribute definition in a DTD, an #IMPLIED declaration means ____________.

A) the attribute is valid.
B) the attribute is required.
C) the attribute is optional.
D) the attribute is implied.

Question 53

To write a DOM document, you need to use an object that implements the _________ interface.

A) DocumentBuilder
B) Serializable
C) Serializer
D) LSSerializer

Question 54

In an attribute definition in a DTD, a V declaration means ____________.

A) use the value V or a value that contains V.
B) use the value V if the attribute is unspecified.
C) use the value V if the attribute is optional.
D) use the value V if the attribute is required.

Question 55

The #PCDATA rule means ____________.

A) the children can consist of any numeric data.
B) the children can consist of 0 or more elements.
C) the children can consist of any character data.
D) any children allowed.

Question 56

Where is the createElement method located?

A) DocumentBuilder class.
B) newBuilder class.
C) DocumentBuilder interface.
D) Document interface.

Question 57

In an attribute definition in a DTD, a #FIXED V declaration means ____________.

A) the attribute must be either unspecified or contain V.
B) the attribute is unspecified.
C) the attribute is optional.
D) the attribute is required.

Question 58

What kind of object do you need to create a new, empty XML document?

A) DocumentBuilder
B) newBuilder
C) newInstance
D) newDocumentBuilder

Question 59

The package javax.xml.parsers contains:

A) Element and Text
B) Document and DocumentBuilder
C) DocumentBuilder and DocumentBuilderFactory
D) Element and Document

Question 60

The XML encoding & is the replacement for the ____ character.

A) @
B) !
C) %
D) &

Question 61

What package will you use to import Element?

A) javax.swing.Element
B) org.w3c.xml.Element
C) javax.parsers.Element
D) org.w3c.dom.Element

Question 62

The method setIgnoringElementContentWhitespace is in the _____ class:

A) DocumentDataDefinition
B) DocumentFactory
C) DocumentFactoryBuilder
D) DocumentBuilderFactory

Question 63

When you parse an XML file with a DTD, ____________.

A) you should tell the parser to ignore the white space.
B) you don't need to request validation.
C) you should supply URL for locating the DTD.
D) your should tell the parser to convert all white space to text.

Question 64

For elements that contain text, the DTD rule is:

A)
B)
C)
D)

Question 65

What is one reason to have the DOM parser ignore white space in an XML document?

A) White space may make the element names invalid.
B) The parser will otherwise make unneeded nodes of the white space.
C) The parser will otherwise add white space to the elements.
D) White space cannot be streamed.

Question 66

What package will you use to import Document?

A) javax.swing.Document
B) org.w3c.xml.Document
C) javax.parsers.Document
D) org.w3c.dom.Document

Question 67

What package will you use to import DocumentBuilder?

A) javax.swing.DocumentBuilder
B) javax.xml.DocumentBuilder
C) javax.parsers.DocumentBuilder
D) javax.xml.parsers.DocumentBuilder

Question 68

Using the grammar notation in your textbook, the expression ::= 0 | 1 | 2 means:

A) "digit must be equal to 012"
B) "digit can be replaced with 1 or 2"
C) "digit must start with 0 then 1 then 2"
D) "digit can be replaced with 0 or 1 or 2"

Question 69

Using the grammar notation in your textbook, the expression

::= a | the means:

A) "article must be equal to a and the"
B) "article can be replaced with a or the"
C) "article can be replaced with a and the"
D) "article cannot be equal a or the"

Question 70

For price elements that must contain currency, the attribute list is:

A)
B)
C)
D)

Question 71

Using the grammar notation in your textbook, which rule means that a verb can be either jumps over or eats?

A) ::= "jumps over" | "eats" |
B) ::= jumps over | eats
C) ::= jumps | over | eats
D) ::= | |

Question 72

A number of useful advanced XML technologies have been standardized. Among them is:

A) HTML
B) HXML
C) XHTML
D) W3C

Question 73

Using the grammar notation in your textbook, the expression

::= a means:

A) "article must be equal to a"
B) "article can be replaced with a or not a"
C) "article can be replaced with a"
D) "article cannot be equal to"

Question 74

Which definition in an XML schema restricts the contents of quantity to an integer?

A)
B)
C)
D)